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Bio-Solids Handling and Headworks

from BioSec Enviro

Shafted & Shaftless Screw Conveyors

Since 1978, our screw conveyor systems have been installed in many of the largest and most complex dewatered sludge cake applications in North America. We provide a full line of conveyance systems for maximum flexibility and performance:

Shafted and Shaftless

Horizontal, Inclined, Vertical and Live Bottom

Full Face, Ribbon and Notched Flights

Fixed and Adjustable Paddle

304 SS, 319 SS or A-36 painted

Any configuration to meet your process needs

Less complex than cake pumps

Enclosed configuration controls odors

Less housekeeping – no spillage

Lower maintenance costs

BioSec Intermediate Bearings for Shafted Conveyors

BioSec offers Intermediate Bearings in many shapes and sizes. By applying a specially developed flexible coupling, the resulting extended life expectancy of the intermediate bearing enables greater distances between bearings. Advantages:

Long distances between bearings

Long life expectancy for bearings

Eliminates the need for multiple (cascade arrangement) conveyors

Can be retrofitted to existing screw conveyor installations

Suitable for reversing screw conveyors

Alternate designs for open or sealed bearings

Local or central lubricators

Eliminate the concerns of dry operation

BioSec BioWear Liners for Shafted & Shaftless Screw Conveyors

BioWear Liners are designed to minimize wear that occurs during transport of abrasive material in both shafted and shaftless screw ocnveyors. BioWear Liners are interchangeable with existing wear liners and can be provided in various thicknesses. The liners will be designed to match the existing screw conveyor securing system. The exact size of the liners required is to be provided to BioSec as sizes vary between screw conveyor manufacturers. The liners can be provided flat or preformed to size.

BioWear Liners are designed for transporting abrasive materials and will provide three to four times the life expectancy of UHMW-PE, depending upon the operation of the equipment.

BioSec Conveyor Quick Reference Guide

Capacities & Dimensions

Horizontal Shafted Conveyors

Capacity

m3/hr ft3/hr

21 738

29 1,015

34 1,199

44 1,550

67 2,362

89 3,155

Diameter

D

mm inches

356 14

406 16

457.2 18

508 20

610 24

711.2 28

Trough Height

H

mm inches

240 9.4

260 10.2

290 11.4

320 12.6

370 14.6

430 16.9

Support Height

V

mm inches

280 11

300 11.8

330 13

360 14.2

410 16.1

460 18.1

Cover Width

B

mm inches

552 21.7

604 23.8

655.2 25.8

706 27.8

808 31.8

910 35.8

Max RPM

54

47

42

38

31

27

Horizontal Shaftless Conveyors

Capacity

m3/hr ft3/hr

11 387

13 473

17 618

24 841

31 1098

45 1604

Diameter

D

mm inches

285 11.2

315 12.4

360 14.2

420 16.5

480 18.9

580 22.8

Trough Height

H

mm inches

220 8.7

240 9.4

260 10.2

290 11.4

320 12.6

370 14.6

Support Height

V

mm inches

250 9.8

270 10.6

290 11.4

320 12.6

350 13.8

400 15.7

Cover Width

B

mm inches

494 19.4

535 21.1

580 22.8

644 25.4

704 27.7

804 31.7

Max RPM

34

30

27

23

20

16

Note: The capacities quoted above will vary depending upon the material to be conveyed, material dryness, and the speed of the conveyor. Dimensions are approximate.

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Vertical Screw Conveyors

The listed capacities are an indication of performance of various vertical conveyors. The capacity depends on several factors, the main one being the product to be lifted. As a rule, vertical conveyors are not fitted with intermediate bearings. In circumstances where the material are to be transported over long vertical distances, it is recommended that staged vertical conveyors are employed. Vertical conveyors can be used on many different materials, including wet, sticky dewatered biosolids. The compact design of the vertical screw conveyor has no return parts, like a belt conveyor. Therefore, one significant advantage is the limited size of the footprint. They can be installed into very tight spaces; typically with the drive able to be mounted at the top or the bottom of the conveyor.

Wastewater Screens & Equipment

BioSec provides wastewater screens and MBBR/IFAS biological wastewater treatment solutions for municipal and industrial facilities, with a wide range of screening, conveyor and storage equipment options. Built from heavier materials (stainless steel, etc.) and robust components to perform dependably for more than 25 years, our equipment meets the most rigorous demands for reliability and long-term service.